For help: web service configuration problems!

For help: web service configuration problems! -- Linux Enterprise Application-Linux server application information. For details, refer to the following section. I used Vmware6.0 virtual RHEL5.0 to set up a web server to store my home page. This webpage can be accessed externally,Files are stored in "var/www/html" for normal access (LAN access ).
Then I move these files to "/home/xxx/public_htm,
Create a user xxx and modify "/etc/httpd/conf/httpd. conf" as follows:
1) DocumentRoot "/home/xxx/public_htm", remove #
2) ServerName 192.168.254.131: 80, remove the # sign
3) Replace UserDir with xxx, and remove the # sign before UserDir public_html.
4) Modified

Options Indexes MultiViews
AllowOverride None
Order allow, deny
Allow from all

# Is removed.
Finally, an error is reported when I restart the httpd service. I checked I don't know what's wrong. Please give me some advice. Thank you!